Dorman - First Stop Brake Master Cylinder P/N:M390184

Turn brake-pedal effort into the hydraulic pressure that operates the brakes with the Dorman - First Stop Brake Master Cylinder M390184. It drops in as a direct-fit replacement for the 1993-1995 Ford F-350, 1994-1995 Ford F-250, 1994-1996 Ford E-250 Econoline, 1994-1996 Ford E-350 Econoline, and 1994-1996 Ford E-350 Econoline Club Wagon [All engines]. Precision-engineered to reproduce the design, function, and performance of the original master cylinder on the listed applications, it is built entirely from new materials for a durable replacement.

• Aluminum housing: 1.125 in bore diameter, with the housing made to match the original part's casting material.
• Three outlets: rearward outlet 7/16-24; secondary outlet thread diameter 9/16-18 & 3/8-24.
• EPDM rubber components: all rubber parts use a high-quality EPDM compound for resistance to glycol-based brake fluid.
• 100% new: made entirely of new materials, not remanufactured, and made to meet SAE International standards.

The reservoir and a sensor are included. Mounting hardware is not included — consult the vehicle service information for the correct fasteners and whether they may be reused. Country of origin: China. Signs a master cylinder may need replacing include a pedal that slowly sinks under steady pressure, a spongy pedal, or fluid seeping at the cylinder; if a failed master cylinder is the cause, this replaces it.

Interchange: Manufacturer part number M390184.